Uniform system of accounts for carriers by air
Subtitle: Prescribed by the Post Office Department for Air Mail Carriers. First issue. Approved July, 1930
Publisher: U.S. Govt. Print. Off.
Published: 1931
Place of publication: Washington
Language: eng
Number of pages: 100
Subjects: Air mail service
Notes: At head of title: "United States Post Office Department. Second Assistant Postmaster General. Division of Air Mail Service.

Microfilm. New York, N.Y., Columbia University Libraries, 1994. 1 microfilm reel, 35 mm.

Filmed; NEH Project (FMEST); 1994.